coastline
noun
coast·line
ˈkōs(t)-ˌlīn 
1
: a line that forms the boundary between the land and the ocean or a lake
2
: the outline of a coast
Examples of coastline in a Sentence
The plane flew along the eastern coastline.
Recent Examples on the Web
This taste of Italian summer elegance naturally inspires wanderlust for the actual coastlines of Italy.
—
Pooja Shah, Forbes.com, 31 July 2025
Storms cause the water to build up near the coastlines then, once conditions calm, the water falls back causing changes in water levels within hours or days, according to the National Park Service.
—Sarah Moore, Freep.com, 31 July 2025
People were urged to stay away from coastlines until any wave surges passed in places as far away as Fiji, Samoa, Tonga, Federated States of Micronesia and Solomon Islands.
—Sasha Rogelberg, Fortune, 30 July 2025
The Pacific Tsunami Warning Center in Hawaii has lifted the tsunami advisory that was in place for San Diego and Orange counties but has left it in effect for other areas of the California coastline.
—Gary Robbins, San Diego Union-Tribune, 30 July 2025
See All Example Sentences for coastline
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Pooja Shah, Forbes.com, 31 July 2025
Storms cause the water to build up near the coastlines then, once conditions calm, the water falls back causing changes in water levels within hours or days, according to the National Park Service.
—Sarah Moore, Freep.com, 31 July 2025
People were urged to stay away from coastlines until any wave surges passed in places as far away as Fiji, Samoa, Tonga, Federated States of Micronesia and Solomon Islands.
—Sasha Rogelberg, Fortune, 30 July 2025
The Pacific Tsunami Warning Center in Hawaii has lifted the tsunami advisory that was in place for San Diego and Orange counties but has left it in effect for other areas of the California coastline.
—Gary Robbins, San Diego Union-Tribune, 30 July 2025
See All Example Sentences for coastline
Cite this Entry
“Coastline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coastline. Accessed 3 Aug. 2025.
Copy CitationKids Definition
coastline
noun
coast·line
ˈkōst-ˌlīn
: the outline or shape of a coast
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